You've seen the shelf: bright boxes, bold puff counts, and prices that swing wildly. The first trick is that the number on the box—puff count—is often a marketing guess, not a promise. A 6,000-puff device might last you a week or a month, depending on how hard you draw. Don't let a big number inflate what you're willing to pay.

Second, look at the price per puff, not the sticker price. If a single-use costs $12 and lasts 2,000 puffs, that's 0.6 cents per puff. A rechargeable might cost $25 but last 6,000 puffs, which is about 0.4 cents per puff—if the person actually uses all of it. The math only works if the recipient vapes enough to drain the device.

So when you're comparing two devices, do the division. That's the only honest way to see which is the better deal for the specific person you're buying for.